Our Passion has always been the Glow… Since introducing the first commercial grade glow stones for concrete and asphalt back in 2008, our reason for being has never changed. To develop and market only the highest performing glow aggregates in the world and back that claim with an iron-clad Performance Guarantee and Product Warranty. Don't take chances with your Glow... Choose AGT™
We have tried some other glow stone products on the market and they all pale in comparison to AGT. Your glow stones produce a 50%-75% greater glow intensity & duration than ANY other other glow marble and glow glass chips we have ever tested.
— Dr. Eugene Tssui, Architect, Author, CA., USA
I have tried other glow stones on the market such as glass glow stones and THEY JUST DON'T GLOW! AGT Glow Stones have the brightest and longest lasting glow on the planet! Don't waste your money or time on anything else!
— Shane M. - Illinois, USA
If you are planning to put your glow stone in concrete - don't waste you money on glass glow stone like I did in the past... They only glow for an hour - MAX!!! The AGT glow stone I bought glows ALL NIGHT!
— Todd K. - AB, Canada